The equations are

                      Equation (1)

                       Equation (2)

Multiply the second equation by 3

Now the equation is

                  Equation (2)

Since the coefficients of the x-terms, +3 and -3, are additive inverses,

you can eliminate these terms by adding the equations.

Add the equations to eliminate variable y.

(write the equations in column form and add)

y = 6

Now Substitute 6 for y in either equation to find the value of x.

                    (Equation 2)

                    (Replace y by 6)

       (Subtract 6 from each side)

                    (Apply additive inverse property: )

                       (Subtract: )

   (Multiply each side by negative one)

                              (Product of two same signs is positive)

The solution is (x, y) = (5, 6)

The solution is (x, y) = (5, 6).